Omegon 2x Premium APO Barlow lens 1.25″
Looking for a way to get more out of your telescope and existing eyepieces without investing in an entirely new set of shorter focal length eyepieces? The Omegon 2x Premium APO Barlow lens is an elegant and optically precise solution that doubles your telescope's focal length and opens up new possibilities for both visual observing and astrophotography.
Apochromatic optics - a genuine difference you can see
The key difference compared to ordinary Barlow lenses is the use of apochromatic optics made from low-dispersion glass. Standard achromatic Barlow lenses can suppress primary chromatic aberration, but the secondary colour error remains noticeable - especially at high magnifications or when used with refractors. The APO design in the Omegon Premium solves this problem at a much higher level: the low-dispersion glass ensures that all wavelengths of light converge at the same focal point, resulting in a sharp, high-contrast image free from purple or green fringing around planetary details.
Greater comfort with longer focal length eyepieces
A practical advantage of using a Barlow lens is that for the same final magnification, you can use eyepieces with a longer focal length. Such eyepieces generally offer a greater eye relief - the distance between the exit pupil and the last glass element - which means significantly more comfortable observing, especially for eyeglass wearers. Instead of a 5 mm eyepiece with just 3-4 mm of eye relief, you simply reach for a 10 mm eyepiece combined with this Barlow lens and achieve identical magnification with far greater observing comfort.
Fully multi-coated optics for maximum light transmission
All optical surfaces of the lens are treated with FMC fully multi-coated anti-reflection coatings. Each uncoated optical surface absorbs or reflects approximately 4-5% of light, causing loss of contrast and the formation of ghosts or flare. Multi-layer coatings reduce reflection to a fraction of a percent on each surface, so overall light transmission remains very high. This is especially critical when observing faint deep-sky objects or during astrophotography, where every photon counts.
Who is it for?
The Omegon 2x Premium APO Barlow lens is an excellent companion for:
- Visual observers of planets, the Moon and double stars
- Astrophotographers seeking a higher effective focal length without the need to purchase an expensive teleconverter
- Eyeglass wearers who benefit from longer eye relief eyepieces
- Anyone who wants to maximise the potential of their existing eyepiece collection
Compatibility
The standard 1.25″ barrel diameter ensures full compatibility with the vast majority of eyepieces and focusers on the market. The Omegon Premium APO works equally well with refractors, reflectors and catadioptric telescopes.
Key specifications
| Parameter |
Value |
| Magnification factor |
2x |
| Barrel diameter |
1.25″ |
| Optical design |
APO (apochromatic) |
| Glass type |
Low-dispersion (ED) |
| Coatings |
FMC (fully multi-coated) |
Summary
If you are looking for a reliable, optically high-quality Barlow lens that will not disappoint even under demanding testing on planetary detail, the Omegon 2x Premium APO is a clear choice. It delivers the optical performance of an apochromatic instrument at a fraction of the cost of a new high-magnification eyepiece set.
